Download - Otogenic brain abscess.pptx
OTOGENIC BRAIN ABSCESS
Benisha Julian
Route of Spread
Tegmen plateTemporal bone
Cerebellum
Superior P
etrosal Sinus
Sigmoid Sinus
Posterior Semicircular Canal
Trautmann’s Triangle
Retrograde Thrombophlebitis
Bacteriology• Staph. aureus & albus• Strep. pyogenes• Pneumoccus• E. coli• B. proteus
1 2
3 4
Stages
Initial Encephalitis Stage
1
Headache
Chills
Nausea and vomitting
Clinical features of
Latent Stage
2
Localization of abscess1- 2
weeks
Headache
Raised temperature
Clinical features of
Expanding Abscess Stage3
Expansion of abscess
Raised Intracranial
tension
Clinical features of Intracranial Tension
Headache
Pulse rate & Irregular breathing
Projectile Vomiting
Raised temperature
Papilledema
Terminal Stage
4
Rupture of AbscessInto ventricle
Temporal Lobe AbscessClinical features of
Aphasia
Oculomotor palsy
Hemiplegia
Homonymous Hemianopia
Clinical features ofCerebellar Abscess
Ataxia
Nystagmus
Dysdiadochokinesia
Past pointing
Investigations• CT - diagnostic• Lumbar Puncture• Electroencephalography• Intra-cranial angiography
Temporal lobe
Abscess
Cerebellar Abscess
Treatment•Antibiotics
• Abscess Drainage
•Mastoidectomy – removal of primary focus
of infection